Count Total Login User.

5y820.NET

how to count total number of login user in asp.net core without identity.Please provide solution

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh5y ago
this could be a valid approach in .net core
credit:-https://forums.asp.net/t/2154835.aspx?Tracking+active+or+logged+in+users
public static class TrackUsers
{
    private static ConcurrentDictionary activeUsers = new ConcurrentDictionary();
    private const Timeout = 20;

    public static void UpdateUserAccess(string userName)
    {
        var now = DateTime.Now;
        activeUsers.AddOrUpdate(
           userName.ToLowerCase(),
           now,
           (k,v) => now
        );
    }

    public static bool IsUserActive(string userName)
    {
        DateTime lastAccess;
        if (activeUsers.TryGetValue(userName.ToLowerCase(), out lastAccess))
           return lastAccess.AddMinutes(Timeout) >= DateTime.Now;
        return false;
    }

    public static List ActiveUsers()
    {
        var now = DateTime.Now;
        activeUsers.Values()
          .Where(r => r.AddMinutes(Timeout) >= now)
          .Select(r => r.Key)
          .ToList();
    }
}
Kiran Mohanty5y ago
Hi,
I guess you can achieve that by manually tracking active user count (in ASP.Net MVC) as below.
public static int count = 0;  //for count of visitors

public void Application_Start(Object sender, EventArgs e)
{
    Application["activeUsers"] = count;
}

public void Session_Start(Object sender, EventArgs e)
{
    count = Convert.ToInt32(Application["activeUsers"]);
    Application["activeUsers"] = count + 1;
}

public void Session_End(Object sender, EventArgs e)
{
   Application["activeUsers"] = count - 1;
   count = Convert.ToInt32(Application["activeUsers"]);
}
Mageshwaran R5y ago
Hi Sourabh,
Try this code:

Controller:
public class HomeController : Controller
{
    private ApplicationDbContext _context;
    public HomeController(ApplicationDbContext context)
    {
        _context = context;
    }
    public IActionResult Index()
    {
        return View();
    }

    public IActionResult About()
    {
        ViewData["UserCount"] = _context.Users.Count();
        ViewData["Message"] = "Hello Word";

        return View();
    }
}
View:
@{
    ViewData["Title"] = "About";

}
<h2>@ViewData["Title"].h2>
<h3>@ViewData["Message"]h3>

<p>Use this area to provide additional information.p>
<button>@ViewData["UserCount"]button>